The Conversation

Every ten minutes in Australia someone has a heart attack. For 17% this will be fatal; the rest get a second chance. If you have had a close call, these five food tips will help get your health back on track.

Artist’s impression shows a sunset seen from the super-Earth Gliese 667 Cc. The brightest star in the sky is the red dwarf Gliese 667 C, which is part of a triple star system.

The insanity defense is often an option of last resort rather than a lenient alternative to imprisonment. Douglas LeMoineBy Meron Wondemaghen, University of New England

The cost of a degree just keeps rising. Is it still worth it? ShutterstockBy Robert Reich, University of California, BerkeleyThe early admissions deadlines for universities across the country have come and gone, and acceptance letters are on their way. But with the cost of a four-year college education rising an average of 5% a year, many students and parents are likely wondering whether the cost of a degree is worth it.

A woman sniffs a glass of wine during a tasting event in Beijing. ReutersBy Pierre Ly, Puget Sound University and Cynthia Howson, University of WashingtonChina’s wine industry has exploded in recent years, with the number of wineries more than doubling over the past decade, propelling the country past Australia to become the world’s 7th-largest producer. What is driving this fast-paced growth and is the quality of Chinese wine improving?

The Greeks hailed Dionysus (also known as Bacchus) as their patron god of wine, said to provide ecstasy and spiritual vision to his devotees. Pictured is Caravaggio's 1595 masterpiece Bacchus. WikimediaBy Robert Fuller, Bradley University

The magi, as you know, were wise men – wonderfully wise men – who brought gifts to the Babe in the manger. They invented the art of giving Christmas presents.

World War One Christmas Truce Commemoration match – but it's debated whether the original ever happened. Mike Egerton/PA WireBy William Keylor, Boston University

After a year in which further details of national intelligence agencies' shadowy surveillance networks were laid bare, a fresh leak of documents reveals the obsessive surveillance that extends as far north as Lapland.Santa’s Arctic Workshop (SAW) has deployed a multinational panopticon surveillance program, according to leaked documents being called “the Snowman Files”.

Smile, though your heart is aching. Morgan, CC BYBy Annie Austin, University of Manchester

Francesco Botticini's The Assumption of the Virgin shows the heavenly hierarchies at play.By Martin Parker, University of Leicester

The grape escape. ShutterstockBy Mohit Kumar Jolly, Rice University